If pollinated date-palms are sold and nothing is mentioned (in the contract) about their fruits, the fruits will go to the person who has pollinated them, and so will be the case with the slave and the cultivator. Nafi' mentioned those three things.  

أَنَّ أَيُّمَا نَخْلٍ بِيعَتْ قَدْ أُبِّرَتْ لَمْ يُذْكَرِ الثَّمَرُ فَالثَّمَرُ لِلَّذِي أَبَّرَهَا وَكَذَلِكَ الْعَبْدُ وَالْحَرْثُ سَمَّى لَهُ نَافِعٌ هَؤُلاَءِ الثَّلاَثَ  

Messenger of Allah ﷺ said, "If somebody sells pollinated date palms, the fruits will be for the seller unless the buyer stipulates that they will be for himself (and the seller agrees).  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ بَاعَ نَخْلاً قَدْ أُبِّرَتْ فَثَمَرُهَا لِلْبَائِعِ إِلاَّ أَنْ يَشْتَرِطَ الْمُبْتَاعُ